cmos battery

[James Takac]

On Saturday 16 June 2007 01:21:17 Adric Mitchell wrote:
> The CMOS battery is just a small watch battery on the motherboard.
> I've never had to change one (it's somewhat rare when you do), but
> just buying a replacement battery and popping it in should fix it.
>
> On Jun 15, 2007, at 10:46 AM, norman wrote:
> > The other day, when booting up I pressed 'Esc' in order to select a
> > particular version of the kernel. To be certain I pressed the key
> > several times and, eventually, got a message telling me that there had
> > been a cmos battery failure and to press 'enter' to continue. Booting
> > restarted and I was able to select the kernel I wanted. I now get this
> > message every time I boot.
> >
> > Does this message mean anything disastrous, what adverse effects do I
> > need to look out for and is there any way I can check to see if the
> > message is valid? Please advise.
> >
> > Norman
> >
> >
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exactly. This battery helps the mobo keep time via the rtc (real time clock). 
So you'll likely find the clock will be out untill you replace this battery. 
Also any changes you made in the bios wont be remembered once you power down 
until it's replaced. it's no biggy